Pick a root word, then add a prefix or suffix to change its meaning. Watch the word transform and learn what each part means!
About 60% of English words have recognizable prefixes or suffixes. Knowing just a few prefixes — like un-, re-, pre-, mis- — lets you decode thousands of new words! This is one of the most powerful vocabulary-building skills in all of reading.
A prefix goes at the beginning and changes the meaning: unhappy = not happy. A suffix goes at the end and can change both meaning and part of speech: happiness (noun), happily (adverb), happier (adjective).
This free interactive reading and language arts tool helps students practice essential ELA skills. Designed for elementary and middle school learners, it provides instant feedback and tracks progress so students can see their improvement over time. All activities align with Common Core ELA standards.
Strong reading and writing skills are the foundation for success in every school subject. Interactive practice tools like this one make it easier for students to build vocabulary, improve grammar, and develop comprehension strategies. Regular practice with engaging activities helps make these skills automatic.
Work through the activities above at your own pace. Each question provides instant feedback. Try to improve your score with each attempt. Teachers can assign this tool for classroom practice or homework, and parents can use it for reading enrichment at home.
Last reviewed: April 2026